016 Purpose of HAZOP and SIL studies on a P&ID - P&ID Course 101

Learn the important considerations process engineers must make when designing protection systems for P&IDs. This video discusses how to ensure overpressure protection while balancing costs and operability.
Process engineers must balance plant safety, costs, and operability when determining protection levels.
Projects typically conduct a hazard and operability (HAZOP) study where teams identify risks and ensure all upset scenarios have proper safeguards.
Conducting a hazard and operability (HAZOP) study would identify risks and ensure all upset scenarios have safeguards. More analysis may be required for critical shutdown systems to determine proper safety integrity levels.
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P&IDs (or, in other words, piping and instrument diagrams) are considered as
a key document when designing or upgrading any process plant.
Through the P&ID, we are supposed to be aware of how the plant shall operate. A well-designed P&ID preparation would lead to smooth project execution. In addition, it shall identify main risks.
This would reduce the probability of issues when running the plant.
So after the P&ID became more mature, it's common to assess the design using safety studies; HAZOP and SIL.
▬ Contents of this video ▬▬▬▬▬▬▬▬▬▬
0:00 - Introduction to P&ID Protection Considerations
0:43 - Cost Implications of Over-Design
1:20 - Challenges with Excessive PSVs and Operator Burden
2:00 - Balancing Safety, Cost, and Operability
2:42 - Importance of HAZOP Sessions in Project Safety
3:21 - Determining SIL Ratings for Shutdown Systems